Mold.



PATENTED MAY 24, 1904.

1 E. CAMPBELL.

APPLICATION IIL'BD MAY 14; 1903.

N0 MODBL.

INVENTOR Edwin Campbell ATTORNEY UNITED STATES Patented May 24, 1.904.

PATE T OFFICE. l

, EDWIN CAMPBELL, OF. EAST ORANGE, NEW JERSEY.

MOLID. l

. SPECIFICATION forming part f Letters Patent No. 760,681, dated May 24,1904.

Application filed May"14=,1903- To all whom it may concern:

Be it known that I EDWIN CAMPBELL, a citizen of the United States ofAmerica, and aresi dent of East Orange, in the county of Essex and Stateof New Jersey, have invented cerwhich is adjustable, so thatsash-Weights of end of the core-piece" being in contact with I andconformmg'. in shape to the, inner surface difl'erentlengths, andconsequently of'differ ent weights, may be cast in the same mold. Forthese'purposesI provide a mold proper consisting of two mating "halves,andwithin this mold proper I insert an adjustable end piece havingastud' projecting centrally from piece has a'recess in its smaller end,Which recess receives the end of said stud, the larger of the side ofthe mold proper.

'My mold is constructed entirely of metal, preferably cast-steel a moldof-this'kind being known as a'chill.

For more detailed description reference will now be had to theaccompanying drawings.

Figural is a vertical longitudinal central section of the completedevice, being on the line 00a; of Fig. 2. Fig. 2; is a plan View lookingin a downward direction compared to Fig. 1,

the top piece of the mold being-removed.

Fig. '3 is a section "on the line y of "Fig. 1'

viewed from the right; Fig. 4 is a perspective detail view of theadjustable end piece. Fig. 5'is a perspective detail view showing theremovable core-piece. Fig. 6 is a fragment in section of the upper endof a sash-weight such as my improved mold is intended to produce.

1 represents the bottom section of the mold, upon which is removablyfitted the top section 2. Each section 1 and 2 is hollowed out, so thatwhen the two are joined there is an out its' length.

Serial No. 157,153.: (No 111 451.)

interior*cylindrical'fspace 3" between them. Each section 1 2 has endwalls i 5, the ends 4=being at right angles to the length of thesections 1 2'and the ends '5 being interiorly rounded, gradually merginginto the inner 1 side surfaces of the sections 1 and 2. Apouring-opening 6 is formed halfin each-of the from the center of theinner endthat is, the.

end againstwhichthe molten metal flows when admitted to themold,therefore the end next to the pouring-opening 6.of the end piece 7is the" stud 8, the lower portion of said stud tapering upward and theupper portion thereof being'cylindr'ical. The end piece 7 has on itsendan annular groove 9, surround' ing the base of the stud 8, the bottomof said 1 groove being rounded and its inner side graduits inner end. Atapered and curved coreallymerging'into thebase of---the stud 8 andits-outer side forming an acute angle with the sides'of the end piece 7.

""10- is-a core-piece, which is bothtapered from one end to the otherand curved, throughhas the recess 11, which detachably receives 7 thecylindrical portion of the stud 8. The

core-piece 10 is adjustable with the end piece 7 to different positionsalong the 'space 3. The end. piece 7 and the core-piece 10 are bothremovable'froin the mold proper and detachable from each other, andtheymay occupyany radial positionwithin the cylindrical interior 3,

this being immaterial; but for the sake of sta- "bility I place thecore-piece 10 with its larger end.downward, as shown. l l g In theoperation of my improved mold the end piece 7 and core-piece 10 areplaced in position with the stud 8 entering the opening 11 and at adistance along the space 3- from the end 5, according to the length ofsash-weight desired to be cast. The casting is removed from the mold bylifting off the top section 1.

The largerend ofthe core-' {piece 10 has the same curve as andfitsagainst the-cylindrical interior surface of' the'sections land 2', andthe smaller end of said core-piece On account of the taper of the stud 8the end piece 7 is'easilydetached from the casting," the end ofsaid'st'ud at the same timeslipping out than the upper tapered portionof the stud 8 a form of eye is produced in the casting which will retaina cord that is knotted at the end. As the base of the stud 8 graduallymerges into the groove 9, sharp corners in the product which would cutthe suspending-cord are avoided; The result of the acute angle which thegroove 9 forms with .the sides of the end piece 7 of theinteriorly-rounded ends 5 and of the pouring-opening 6, entering themold at the center of the interiorly-rounded end, is to preclude theformation on the product of outwardly projecting corners or eXcrescenceswhich might cause trouble in use by catching in the raceway or bydestructive and unnecessary friction therein. The function of the endwalls 4 is merely to prevent the accidental dropping out of the endpiece 7 and core-piece 10 in handling the mold. Thefunction of thecylindrical portion of the stud 8 is to retain the core-piece 10 steadyand in perfect alinementin relation to the end piece 7, as if the outerend. of the stud 8 and the opening 11 were tapering the said core-piecewould not be held from toppling over out of place. The cylindrical pin 8will not readily slip from the hole 11 under a twisting or side strain,because its parallel sides obtain a firm bite against the perpendicularsides of the said hole, Whereas in the case of a tapering pin and holethe force of the bite would be lessened and under a side strain a camaction would be set up tending to displace the pin from the hole. Alsoin order to increase the firmness of its hold preferably the cylindricalportion of the pin entering the hole is of greater length than diameter.The end piece 7 and core-piece 10 can also be used in sand moldsindependently of the chill -mold described and composed of the sections1 and 2, and I have so used them with complete success.

I claim as my inve-ntion 1. A chill-mold for sash-weights consisting ofthe combination of a mold proper having a pouring-opening at one endthereof, an adj ustable end piece contained within said mold proper andforming its other end, an axial stud projecting from the inner end ofsaid end piece, and a core-piece having an opening detachably receivingthe end of said stud, said core-piece being adjustable with said endpiece.

2. In a chill-mold for sash-weights, the combination of a mold proper,an adjustable end piece containedwithin said mold proper and forming oneend thereof, an axial stud projectin'g from the inner end of said endpiece, and a core-piece having an opening detach ably receiving the endof said stud, said core-piece being adjustable with said end piece.

3. A chill-mold for sash-weights consisting of the combination of a moldproper having a pouring-opening an adjustable end piece contained withinsaid mold proper and forming one end thereof, a stud projecting from thecenter of the inner end of said end piece, the lower portion of saidstud tapering upward from the base, and a curved and tapered corepiecehaving a recess in its smaller end detachably receiving the end of saidstud, the larger end of said core-piece conforming to and contactingwith the inner side surface of said mold proper.

4. A chill-mold for sash-weights consisting of the combination of a moldproper havinga pouring-opening, an adjustable end piece contained withinsaid mold proper, and a tapered and curved core-piece, the smaller endof said core-piece contacting with the center of the inner end of saidend piece and the larger end of said core-piece conforming to andcontacting with the inner side surface of said mold proper, saidcore-piece being movable with said end piece.

5. A chill-mold for saslrweights consisting of the combination of a moldproper having a cylindrical interior space and composed of two halvesdetachably fitted together longitudinally, one end of said interiorspace being rounded, said mold proper having a pouringopening at thecenter of said rounded end, and having its other end closed, anadjustable end piece fitting the interior of said mold proper, an axialstud projecting from the inner end of said end piece and integraltherewith, the lower portion of said stud tapering upward and the upperportion thereof being cylindrical, said end piece having an annulargroove having a rounded bottom, said groove surrounding and merging intothe tapered base of said stud and on its outer circumference forming anacute angle with the sides of said end piece, and a curved and taperedcore-piece having a recess in its smaller end, said recess detachablyreceiving the cylindrical portion of said stud, the larger end of saidcore -piece conforming to and contacting with the inner side surface ofsaid mold proper, said core-piece being adjustable with said end piece.

In testimony whereof I hereunto sign my name and alfix my seal this 12thday of May, 1903.

EDWIN CAMPBELL. I: L. s]

